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TL1451AMDREP bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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TL1451AMDREP bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 25 page www.ti.com FEATURES 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 CT RT Error 1IN + Amplifier 1 1IN − 1FEEDBACK 1DTC 1OUT GND REF SCP 2IN + Error 2IN − Amplifier 2 2FEEDBACK 2DTC 2OUT VCC D PACKAGE (TOP VIEW) DESCRIPTION/ORDERING INFORMATION TL1451A-EP DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS614 – DECEMBER 2005 • Controlled Baseline • Variable Dead Time Provides Control Over Total Range – One Assembly/Test Site, One Fabrication Site • Internal Regulator Provides a Stable 2.5-V Reference Supply • Enhanced Diminishing Manufacturing Sources (DMS) Support • Enhanced Product-Change Notification • Qualification Pedigree (1) • Complete Pulse-Width Modulation (PWM) Power-Control Circuitry • Completely Synchronized Operation • Internal Undervoltage Lockout Protection • Wide Supply-Voltage Range • Internal Short-Circuit Protection • Oscillator Frequency . . . 500 kHz Max (1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. The TL1451A-EP incorporates on a single monolithic chip all the functions required in the construction of two pulse-width modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A-EP contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits. The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low VCC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational. The TL1451A-EP is characterized for operation from –55 °C to 125°C. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING –55 °C to 125°C SOIC – D Tape and reel TL1451AMDREP TL1451EPG4 (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas On products compliant to MIL-PRF-38535, all parameters are Instruments standard warranty. Production processing does not tested unless otherwise noted. On all other products, production necessarily include testing of all parameters. processing does not necessarily include testing of all parameters. |
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Mô tả tương tự - TL1451AMDREP |
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